of Edinburgh, Session 1872-73. 145 
Of these old beach lines there are many examples elsewhere 
than Glen Roy; and it is important to obtain reports of them, that 
they may be carefully examined. 
Such terraces are visible in several parts of Flichity Valley, 
about 10 miles south of Inverness ; and there also, the old detrital 
embankment still exists, which appears to have kept in the waters 
of the lake. It has been cut through by the river which now flows 
through Flichity Valley. 
The whole of this valley deserves more particular examination, 
both with reference to these terraces, and with reference to the 
boulders, which lie in great heaps below its mouth. 
In the valley of the Tay, between Pitlochry and Killiecrankie, 
there is a very instructive deposit of boulder clay and sand lying 
on the clay-slate rocks of Craig Ower hill, which forms here the 
east side of the valley. The deposit is well seen in two ravines, 
formed by mountain torrents, which have cut through the beds 
down to the rocks in one of the ravines, forming scaurs from 50 to 
80 feet high. These scaurs show that, whilst the boulder clay 
presents only faint traces of stratification, if any, the beds of 
sand, which are in the heart of the boulder clay, are distinctly 
stratified. Following the course of the most northern of the two 
ravines up from the Pitlochry road (about 350 feet above sea, and 
about 150 above the bottom of the valley), he found the above de- 
posits all the way up, to a height of about 1350 feet above the sea. 
He saw that this deposit was continued along the valley towards 
the north, and he was informed by the Rev. Mr Grant, of Ten- 
nandry, the minister of the parish, who takes some interest in 
these investigations, that similar deposits exist on the flanks of 
Ren-y-gloe, a mountain three or four miles to the north-east, within 
the limits of this valley, and at levels several hundred feet 
higher. 
This locality was also visited by another member of the Com- 
mittee, the Rev. Mr Brown, who was much struck by the beds of 
sand and clay before referred to. He states that he made a minute 
search for organisms in the clay, thinking that if the beds resulted 
from marine currents, some remains, either animal or vegetable, 
would exist, but he found none. 
Whether these beds were formed by the sea or by fresh water, it 
